WO2023012984A1 - Terminal, station de base et procédé de communication - Google Patents

Terminal, station de base et procédé de communication Download PDF

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Publication number
WO2023012984A1
WO2023012984A1 PCT/JP2021/029188 JP2021029188W WO2023012984A1 WO 2023012984 A1 WO2023012984 A1 WO 2023012984A1 JP 2021029188 W JP2021029188 W JP 2021029188W WO 2023012984 A1 WO2023012984 A1 WO 2023012984A1
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WO
WIPO (PCT)
Prior art keywords
terminal
base station
signals
channels
beam switching
Prior art date
Application number
PCT/JP2021/029188
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English (en)
Japanese (ja)
Inventor
尚哉 芝池
浩樹 原田
聡 永田
チーピン ピ
ジン ワン
ラン チン
Original Assignee
株式会社Ｎｔｔドコモ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to US18/576,648 priority Critical patent/US20240333364A1/en
Priority to PCT/JP2021/029188 priority patent/WO2023012984A1/fr
Publication of WO2023012984A1 publication Critical patent/WO2023012984A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to terminals, base stations and communication methods in wireless communication systems.
  • NR New Radio
  • LTE Long Term Evolution
  • Non-Patent Document 2 is considering using a higher frequency band than previous releases (eg, Non-Patent Document 2).
  • a higher frequency band eg., Non-Patent Document 2.
  • applicable numerology including subcarrier spacing, channel bandwidth, etc., physical layer design, possible obstacles in actual wireless communication, etc. are being studied.
  • the present invention has been made in view of the above points, and an object thereof is to provide a technique capable of securing the necessary time for beam switching.
  • a terminal includes a control unit that assumes a beam switching interval between multiple signals or channels to be transmitted and received as a sufficient time corresponding to a large subcarrier interval.
  • a technique that enables flexible beam switching corresponding to a large subcarrier interval.
  • FIG. 1 is a diagram for explaining a radio communication system according to an embodiment of the present invention
  • FIG. It is a figure which shows the example of the frequency range in embodiment of this invention. It is a figure which shows the relationship between SCS and symbol length.
  • 10 is a flow chart showing an example of the flow of transmission and reception of assigned signals or channels according to Example 2; It is a figure showing an example of functional composition of base station 10 in an embodiment of the invention.
  • 2 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention;
  • FIG. 2 is a diagram showing an example of hardware configuration of base station 10 or terminal 20 according to an embodiment of the present invention;
  • FIG. 1 is a diagram for explaining a radio communication system according to an embodiment of the present invention.
  • a radio communication system according to an embodiment of the present invention includes a base station 10 and a terminal 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is an example and there may be more than one.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • Physical resources of radio signals are defined in the time domain and the frequency domain.
  • the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain is defined by the number of subcarriers or resource blocks. good too.
  • a TTI Transmission Time Interval
  • a slot or a TTI may be a subframe.
  • both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) by CA (Carrier Aggregation).
  • SCell Secondary Cell
  • PCell Primary Cell
  • CA Carrier Aggregation
  • the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 by DC (Dual Connectivity).
  • DC Dual Connectivity
  • the terminal 20 is a communication device with a wireless communication function, such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module. As shown in FIG. 1 , the terminal 20 receives control signals or data from the base station 10 on the DL and transmits control signals or data to the base station 10 on the UL, thereby performing various functions provided by the wireless communication system. Use communication services. Also, the terminal 20 receives various reference signals transmitted from the base station 10, and measures channel quality based on the reception result of the reference signals. Note that the terminal 20 may be called UE, and the base station 10 may be called gNB.
  • up to 64 SSB beams may be supported in licensed and unlicensed bands.
  • 120 kHz SCS applied to SSB and 120 kHz SCS applied to signals and channels related to initial access may be supported.
  • CORESET#0/Type 0-PDCCH included in the SSB MIB of 120 kHz SCS, 480 kHz SCS and 960 kHz SCS may be supported.
  • one SCS of CORESET#0/Type0-PDCCH may be supported per SCS of SSB.
  • ⁇ SCS of SSB, CORESET#0/SCS of Type0-PDCCH ⁇ may support ⁇ 120, 120 ⁇ , ⁇ 480, 480 ⁇ , ⁇ 960, 960 ⁇ .
  • SSB-CORESET multiplexing pattern 1 may be preferred.
  • FIG. 3 is a diagram showing the relationship between SCS and symbol length (time length of symbol). As shown in FIG. 3, the wider the SCS, the shorter the symbol length (symbol time length). Also, if the number of symbols per slot is constant (that is, 14 symbols), the wider the SCS, the shorter the slot length.
  • Example 1 shows an example where the beam switching interval between signals or channels is defined as a "transient period" based on radio requirements.
  • Send and receiving may be at least one of the following: That is, multiple SRS (Sounding Reference Signal), multiple PUCCH (Physical Uplink Control CHannel), multiple PUSCH (Physical Uplink Shared Channel), multiple DMRS (Demodulation reference signal), multiple PTRS (Phase-tracking reference signal) , multiple PDCCH (Physical Downlink Control Channel), multiple PDSCH (Physical Downlink Shared Channel), multiple CSI-RS (Channel-state information reference signal), multiple SSB, multiple RACH (Random Access Channel), or the above Any combination of SRS (Sounding Reference Signal), multiple PUCCH (Physical Uplink Control CHannel), multiple PUSCH (Physical Uplink Shared Channel), multiple DMRS (Demodulation reference signal), multiple PTRS (Phase-tracking reference signal) , multiple PDCCH (Physical Downlink Control Channel), multiple PDSCH (Physical Downlink Shared Channel), multiple CSI-RS (Channel-state information reference signal), multiple SS
  • Specific conditions may be at least one of the following.
  • the first condition is that separate transmit beams are used.
  • the second condition is the use of separate spatial filters.
  • a third condition is that a separate QCL or TCI setting is used.
  • the fourth condition is the condition of using individual transmission power.
  • the length of the "transitional period" may be at least one of the following:
  • the length of the first transition period is a fixed value. For example, it may be 5 microseconds, or it may be 4 or 3 microseconds. Note that the unit does not have to be microseconds.
  • the length of the second transitional period is a value determined according to the conditions. For example, it is a value determined on the basis of the subcarrier spacing, 5 microseconds for a subcarrier spacing of 120 kHz and 3 microseconds for a 960 kHz subcarrier spacing. Alternatively, for example, it may be a value determined based on the subcarrier interval and the capability or characteristics of the terminal 20 .
  • the length of the third transition period may be a configurable value. For example, it may be a value set by RRC, MAC-CE, DCI, or the like.
  • the "transitional period” is defined as a sufficient time corresponding to a large subcarrier interval. This allows sufficient time between transmissions and receptions without the need for configuration or instruction.
  • Example 2 This embodiment shows an example in which the beam switching interval between signals or channels is defined based on the design of the physical layer.
  • Terminal 20 is not expected to be scheduled or configured to transmit or receive signals or channels in separate beams. That is, the spacing between signals or channels of individual beams is smaller than the required beam switching spacing.
  • the terminal 20 may define processing when there is not enough beam switching interval between multiple signals or channels.
  • FIG. 4 is a flowchart showing an example of the flow of transmission and reception of assigned signals or channels according to the second embodiment.
  • step S12 determines that the beam switching interval of the continuously assigned signals or channels is sufficient (step S12: YES), it allows different beams and switches the assigned signals or Channels are transmitted and received (step S13).
  • step S12 determines that the beam switching interval of the continuously assigned signals or channels is not sufficient (step S12: NO), it transmits and receives each of the assigned signals or channels in the same beam. (Step S14).
  • the base station 10 or the terminal 20 may make a determination in step S12 shown in FIG. 4 based on at least one of the thresholds shown below. That is, the "transition period" in Example 1, a predefined fixed value, a plurality of fixed values specified by some conditions (for example, some conditions are subcarrier spacing, frequency band, etc. good).
  • the value that the base station 10 or the terminal 20 compares with these thresholds may be any of the following. That is, the subcarrier spacing, the length of the cyclic prefix at the set subcarrier spacing, and the symbol length.
  • the base station 10 or the terminal 20 may determine whether or not it is sufficient in step S12 as follows.
  • the base station 10 or the terminal 20 determines that the length of the cyclic prefix at the set subcarrier interval is smaller than the above-described threshold value, one symbol interval is required between transmission and reception. can be assumed.
  • the base station 10 or the terminal 20 determines that the symbol length at the set subcarrier interval is smaller than the above threshold, it is assumed that one symbol interval is required between transmission and reception.
  • the base station 10 or the terminal 20 may perform any of the following operations for the operation in step S14 shown in FIG.
  • the base station 10 or terminal 20 may transmit or receive these signals or channels using the same beam without performing beam switching. Any of the following methods may be adopted as the beam determination method.
  • the base station 10 or terminal 20 may determine beams for any of the following signals or channels.
  • a base station 10 or terminal 20 may use the beam used in the previous signal or channel. In this case, there is an advantage that no timeline is required. That is, even if the base station 10 or the terminal 20 is unaware that such an "insufficient beam switching interval" problem occurs when starting to transmit or receive a preceding signal or channel. is.
  • a base station 10 or terminal 20 may use the beam used in subsequent signals or channels. This has the advantage that the beam used to transmit and receive subsequent signals or channels may be the more desirable beam.
  • a base station 10 or terminal 20 may use the beams of the signals or channels of high importance.
  • the base station 10 or terminal 20 may determine the importance based on either or both of the signal or channel type and the defined priority. Priority may be specified by the priority field of the DCI. This has the advantage that the importance of the signal or channel can be taken into account.
  • the base station 10 or the terminal 20 may use predefined beams configured by RRC.
  • a predefined beam may be a wider beam that "covers" various beams.
  • a predefined common beam may be set in the RRC for all or individual combinations of "front and rear beam pairs".
  • separate pre-defined beams may be set in the RRC, respectively for separate combinations of "front and rear beam pairs”.
  • the applied beam has the advantage that it can cover several original beams.
  • the base station 10 or the terminal 20 may cancel previous or subsequent transmissions or receptions without performing beam switching.
  • the base station 10 or the terminal 20 may determine which transmission or reception to cancel, before or after, by any of the following methods.
  • the base station 10 or the terminal 20 may decide whether to cancel transmission or reception before or after, based on one or both of the specifications and RRC settings. For example, it may be specified to cancel a previous transmission or reception, or it may be specified to cancel a subsequent transmission or reception.
  • Base station 10 or terminal 20 may decide whether to cancel transmission or reception before or after based on either or both of the type of signal or channel and the priority of signal or channel.
  • the base station 10 or the terminal 20 cancels the following low priority PUSCH in the case of the preceding high priority PUSCH and the following low priority PUSCH with an interval smaller than the required beam switching interval. good too.
  • the base station 10 or the terminal 20 may cancel the transmission of the preceding PUSCH when transmitting the preceding PUSCH and the succeeding PUCCH with an interval smaller than the required beam switching interval.
  • the base station 10 or terminal 20 may puncture or cancel symbols as any of the following.
  • the base station 10 or terminal 20 may puncture or cancel the symbol as the last symbol in the preceding transmission or reception.
  • the base station 10 or terminal 20 may puncture or cancel the symbol as the first symbol in subsequent transmissions or receptions.
  • the symbols to puncture or cancel are the last symbol in the preceding transmission or reception and the first symbol in the subsequent transmission or reception. may be
  • the base station 10 or the terminal 20 may employ the above-described symbol determination method based on any of the following.
  • the base station 10 or terminal 20 may decide based on either or both of the specification and RRC configuration.
  • the base station 10 or the terminal 20 may apply the multiple methods described above to beam switching between downlink signals or channels, or may apply beam switching between uplink signals or channels.
  • the base station 10 or the terminal 20 performs beam switching between the downlink signal or channel and the uplink signal or channel according to Example 1, Example 2-1, Modification 2 of Example 2-2, and Modification 3 may be applied.
  • the base station 10 or the terminal 20 may apply each of the above options according to specific conditions, such as whether the LBT is on or off, whether it is a licensed or unlicensed system, and the like.
  • the base station 10 or the terminal 20 may apply each option described above in a specific numerology, for example, one or both of subcarrier intervals of 480 kHz and 960 kHz.
  • the base station 10 or terminal 20 may decide which option to apply based on at least one of the following. - Setting by upper layer parameters - Terminal capability (UE Capability) reported by terminal 20 (in the case of base station 10) ⁇ Definition of specifications ⁇ Setting by upper layer parameters and terminal capability (UE Capability) reported by terminal 20 (combination of the above determination methods) (in the case of base station 10) ⁇ Determination by signal or channel
  • UE Capability terminal capability
  • UE Capability whether or not the terminal 20 supports signals or channels set or scheduled to individual beams, and whether each interval is smaller than the required beam switching interval. Information indicating whether to do so may be defined.
  • UE Capability when the interval between signals or channels is smaller than the required beam switching interval, the terminal 20 has a signal or channel with an individual instruction or setting beam, Information may be defined to indicate whether to support applying the same beam.
  • the terminal 20 when the interval between signals or channels is smaller than the required beam switching interval, the terminal 20 has a signal or channel with an individual instruction or setting beam Information indicating whether to support canceling one may be defined.
  • UE Capability when the interval between signals or channels is smaller than the required beam switching interval, the terminal 20 has a signal or channel with an individual instruction or setting beam Information indicating whether to support canceling one may be defined.
  • the terminal 20 may transmit one or more of the above-described capability information to the base station 10. Also, based on the capability information received from the terminal 20, the base station 10 may instruct the terminal 20 to operate according to the capability.
  • the beam switching interval between multiple signals or channels is assumed to be a sufficient time corresponding to a large subcarrier interval.
  • the terminal 20 defines a beam switching interval between signals or channels as a "transient period" based on radio requirements. This allows sufficient time between transmissions and receptions without the need for configuration or instruction.
  • beam switching intervals between signals or channels are defined based on the design of the physical layer. This allows sufficient time between transmissions and receptions regardless of the radio's requirements.
  • the technology according to the present embodiment described above enables flexible beam switching corresponding to a large subcarrier interval.
  • FIG. 5 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 has a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
  • the functional configuration shown in FIG. 5 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary. Also, the transmitting unit 110 and the receiving unit 120 may be collectively referred to as a communication unit.
  • the transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, higher layer information from the received signals. Further, the transmission section 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DCI by PDCCH, data by PDSCH, and the like to the terminal 20 .
  • the setting unit 130 stores preset setting information and various types of setting information to be transmitted to the terminal 20 in a storage device included in the setting unit 130, and reads them from the storage device as necessary.
  • the control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110 . Also, the control unit 140 includes a function of performing LBT. A functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110 , and a functional unit related to signal reception in control unit 140 may be included in receiving unit 120 . Also, the transmitter 110 may be called a transmitter, and the receiver 120 may be called a receiver.
  • the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal.
  • the receiving unit 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, DCI by PDCCH, data by PDSCH, and the like transmitted from the base station 10 .
  • the transmission unit 210 as D2D communication, to the other terminal 20, PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Channel) etc.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Discovery Channel
  • PSBCH Physical Sidelink Channel
  • the receiving unit 120 may receive PSCCH, PSSCH, PSDCH, PSBCH, or the like from another terminal 20 .
  • the setting unit 230 stores various types of setting information received from the base station 10 or other terminals by the receiving unit 220 in the storage device provided in the setting unit 230, and reads them from the storage device as necessary.
  • the setting unit 230 also stores preset setting information.
  • the control unit 240 controls the terminal 20 . Also, the control unit 240 includes a function of performing LBT.
  • the terminals and base stations of this embodiment may be configured as the terminals and base stations shown in the following items. Also, the following communication methods may be implemented.
  • (Section 5) a control unit that assumes a beam switching interval between multiple signals or channels to be transmitted and received as a sufficient time corresponding to a large subcarrier interval; base station. (Section 6) assuming a beam switching interval between multiple signals or channels to be transmitted and received as a sufficient time corresponding to a large subcarrier spacing; The method of communication performed by the terminal.
  • any of the above configurations provides a technology that enables flexible beam switching corresponding to a large subcarrier spacing.
  • the second term it is possible to secure a sufficient period between multiple transmissions and receptions without requiring setting or instruction.
  • the third term it is possible to define the behavior when a sufficient period cannot be secured between multiple transmissions and receptions.
  • the fourth term it is possible to define the behavior when a sufficient period cannot be secured between multiple transmissions and receptions.
  • a base station capable of flexible beam switching corresponding to a large subcarrier spacing.
  • each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
  • a functional block may be implemented by combining software in the one device or the plurality of devices.
  • Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't
  • a functional block (component) that performs transmission is called a transmitting unit or transmitter.
  • the implementation method is not particularly limited.
  • the base station 10, the terminal 20, etc. may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 7 is a diagram illustrating an example of hardware configurations of the base station 10 and the terminal 20 according to an embodiment of the present disclosure.
  • the base station 10 and terminal 20 described above are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. good too.
  • the term "apparatus” can be read as a circuit, device, unit, or the like.
  • the hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without some devices.
  • Each function of the base station 10 and the terminal 20 is performed by the processor 1001 performing calculations and controlling communication by the communication device 1004 by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002. or by controlling at least one of data reading and writing in the storage device 1002 and the auxiliary storage device 1003 .
  • the storage device 1002 is a computer-readable recording medium, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
  • the storage device 1002 may also be called a register, cache, main memory (main storage device), or the like.
  • the storage device 1002 can store executable programs (program code), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, for example, an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disc, a magneto-optical disc (for example, a compact disc, a digital versatile disc, a Blu -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
  • the storage medium described above may be, for example, a database, server, or other suitable medium including at least one of storage device 1002 and secondary storage device 1003 .
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD).
  • FDD frequency division duplex
  • TDD time division duplex
  • the transceiver may be physically or logically separate implementations for the transmitter and receiver.
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
  • the output device 1006 is an output device (for example, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • Each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • the base station 10 and the terminal 20 include microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), FPGAs (Field Programmable Gates and other hardware arrays). , and part or all of each functional block may be implemented by the hardware.
  • processor 1001 may be implemented using at least one of these pieces of hardware.
  • the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
  • the processing order may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described using functional block diagrams for convenience of explanation of processing, such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are stored in random access memory (RAM), flash memory, read-only memory, respectively. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.
  • notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods.
  • notification of information includes physical layer signaling (e.g., DCI, UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB ( Master Information Block (SIB), System Information Block (SIB), other signals, or a combination thereof.
  • RRC signaling may also be referred to as RRC messages, for example, RRC Connection Setup (RRC Connection Setup) message, RRC connection reconfiguration message, or the like.
  • Each aspect/embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark) )), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other suitable systems and extended It may be applied to at least one of the next generation systems. Also, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G, etc.).
  • a specific operation performed by the base station 10 in this specification may be performed by its upper node in some cases.
  • various operations performed for communication with the terminal 20 may be performed by the base station 10 and other network nodes other than the base station 10 (eg, but not limited to MME or S-GW).
  • the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
  • Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and the like may be transmitted to another device.
  • the determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), may be performed by a boolean (Boolean: true or false), or may be a numerical comparison (for example , comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.), the website, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
  • wired technology coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
  • the channel and/or symbols may be signaling.
  • a signal may also be a message.
  • a component carrier may also be called a carrier frequency, cell, frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information.
  • radio resources may be indexed.
  • base station BS
  • radio base station base station
  • base station fixed station
  • NodeB nodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • a base station can accommodate one or more (eg, three) cells.
  • the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being associated with a base station subsystem (e.g., an indoor small base station (RRH:
  • RRH indoor small base station
  • the term "cell” or “sector” refers to part or all of the coverage area of at least one of the base stations and base station subsystems serving communication services in this coverage.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • a mobile station is defined by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like.
  • the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a terminal.
  • a configuration in which communication between a base station and a terminal is replaced with communication between a plurality of terminals 20 for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.
  • the terminal 20 may have the functions of the base station 10 described above.
  • words such as "up” and “down” may be replaced with words corresponding to communication between terminals (for example, "side”).
  • uplink channels, downlink channels, etc. may be read as side channels.
  • a terminal in the present disclosure may be read as a base station.
  • the base station may have the functions that the terminal has.
  • determining and “determining” used in this disclosure may encompass a wide variety of actions.
  • “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (eg, lookup in a table, database, or other data structure);
  • “judgment” and “determination” are used to refer to receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (Accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
  • “judgment” and “decision” refer to resolving, selecting, choosing, establishing, comparing, etc.
  • judgment and “decision" can contain.
  • judgment and “decision” may include considering that some action is “judgment” and “decision”.
  • judgment (decision) may be read as “assuming", “expecting”, “considering”, or the like.
  • connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
  • two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
  • any reference to elements using the "first,” “second,” etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to a first and second element does not imply that only two elements can be employed or that the first element must precede the second element in any way.
  • a radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may also consist of one or more slots in the time domain. A subframe may be of a fixed length of time (eg, 1 ms) independent of numerology.
  • a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, radio frame configuration, transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
  • SCS subcarrier spacing
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
  • a slot may consist of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
  • a slot may be a unit of time based on numerology.
  • a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • one slot or one minislot may be called a TTI.
  • TTI Transmission Time Interval
  • at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms may be Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
  • one slot may be called a unit time. The unit time may differ from cell to cell depending on the neurology.
  • TTI refers to, for example, the minimum scheduling time unit in wireless communication.
  • the base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
  • TTI is not limited to this.
  • a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
  • TTI that is shorter than a normal TTI may also be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, and the like.
  • the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
  • the short TTI e.g., shortened TTI, etc.
  • a TTI having the above TTI length may be read instead.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in the RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on numerology.
  • the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
  • One TTI, one subframe, etc. may each consist of one or more resource blocks.
  • One or more RBs are physical resource blocks (PRB: Physical RB), sub-carrier groups (SCG: Sub-Carrier Group), resource element groups (REG: Resource Element Group), PRB pairs, RB pairs, etc. may be called.
  • PRB Physical resource blocks
  • SCG Sub-Carrier Group
  • REG Resource Element Group
  • PRB pairs RB pairs, etc.
  • a resource block may be composed of one or more resource elements (RE: Resource Element).
  • RE Resource Element
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a bandwidth part (which may also be called a partial bandwidth, etc.) may represent a subset of contiguous common resource blocks (RBs) for a certain numerology in a certain carrier.
  • the common RB may be identified by an RB index based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or multiple BWPs may be configured for a UE within one carrier.
  • At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
  • BWP bitmap
  • radio frames, subframes, slots, minislots and symbols described above are only examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, etc.
  • CP Cyclic Prefix
  • notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Ce terminal comprend une unité de commande qui prend, en tant que temps suffisant correspondant à un grand intervalle de sous-porteuse, l'intervalle de commutation de faisceau entre une pluralité de signaux ou de canaux qui doivent être transmis et reçus.
PCT/JP2021/029188 2021-08-05 2021-08-05 Terminal, station de base et procédé de communication WO2023012984A1 (fr)

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Citations (1)

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US20210112540A1 (en) * 2019-10-10 2021-04-15 Qualcomm Incorporated Beam switching gap

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US20210112540A1 (en) * 2019-10-10 2021-04-15 Qualcomm Incorporated Beam switching gap

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Title
LENOVO, MOTOROLA MOBILITY: "Beam-management enhancements for NR from 52.6 GHz to 71GHz", 3GPP DRAFT; R1-2102999, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-meeting; 20210412 - 20210420, 6 April 2021 (2021-04-06), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051993344 *
LENOVO, MOTOROLA MOBILITY: "Enhancements on Multi-TRP for PDCCH, PUCCH and PUSCH", 3GPP DRAFT; R1-2102839, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210412 - 20210420, 6 April 2021 (2021-04-06), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051993230 *
MODERATOR (INTERDIGITAL, INC.): "Discussion Summary #2 for Beam Management for new SCSs", 3GPP DRAFT; R1-2103912, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20210412 - 20210420, 20 April 2021 (2021-04-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051996579 *
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